10040042 has 4 divisors (see below), whose sum is σ = 15060066. Its totient is φ = 5020020.

The previous prime is 10040011. The next prime is 10040057. The reversal of 10040042 is 24004001.

10040042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 8404201 + 1635841 = 2899^2 + 1279^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2510009 + ... + 2510012.

Almost surely, 2^10040042 is an apocalyptic number.

10040042 is a deficient number, since it is larger than the sum of its proper divisors (5020024).

10040042 is an equidigital number, since it uses as much as digits as its factorization.

10040042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5020023.

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 10040042 is about 3168.6025310853. The cubic root of 10040042 is about 215.7306456189.

Adding to 10040042 its reverse (24004001), we get a palindrome (34044043).

The spelling of 10040042 in words is "ten million, forty thousand, forty-two".